Why can fluorescent lamps emit various colors?
Have you ever seen fluorescence? After the surface of the object is coated with fluorescent material, the light can be sent out at night to absorb various colors of light,Silver light powder material is different, the light is also different
The fluorescent lamp uses this principle. The fluorescent lamp itself sends out ultraviolet light, and the fluorescent powder coated on the tube wall absorbs ultraviolet lightAfter the line is changed into visible light, the phosphor is different and the color of the light is also different
Phosphor of red, green and blue three colors, yttrium oxide (red light, peak wavelength 611nm), magnesium aluminate (emitting green light),The peak wavelength is 541nm) and the barium magnesium aluminate (blue light, with a peak wavelength of 450nm) mixed in a certain proportion can be obtainedFluorescent powder of any color can be sent out
